CUEVAS DE OÑATI-ARRIKRUTZ

On the road to the sanctuary of Aránzazu, these caves were one of the pioneering sites of speleological, archaeological and paleontological exploration in the Basque Country. Amongst other things, the complete skeleton of a cave lion has been discovered... A one-hour guided tour explains, among other things, how water sculpted the rock, the remarkable geological formations of the place, and the importance of Arrikrutz in the context of the history of speleology.